Forum Discussion

Copper Contributor

Sep 16, 2020

Direct Routing Hosting Model

Hi Can someone tell me when I create a voice route with new-csonlinevoiceroute does the -OnlinePSTNGateway parameter need to match the name of the subdomain created that was based on the carrier dom...

Iron Contributor

Sep 16, 2020

Hi ASharpie

In your example, you wouldn't use sbc1.dr.domain.com when doing new-csonlinevoiceroute.

This is the carrier domain CsOnlinePSTNGateway.

In fact, if possible I would simplify it if you can. Just use sbc1.domain.com in the carrier domain.

Then, in the customer tenant, new-csonlinevoiceroute would be customer1.sbc1.domain.com. It will take the derived trunk from sbc1.domain.com.

You will need public A DNS records for customer1.sbc1.domain.com to point to the public IP of sbc1.domain.com

Of course, you'll need a user in the customer tenant assigned to the domain customer1.sbc1.domain.com with an E1\E3 or E5 license in order to be able to run the new-csonlinevoiceroute cmdlet.

I think taking away 1 of the sub domains if you can might simplify it if possible. if not, then your customer domain will need be customer1.sbc1.dr.domain.com, not customer1.dr.domain.com as it won't get the derived settings from the OnlineGateway as that's sbc1.dr.domain.com

Hope that helps.

ASharpie

Copper Contributor

Sep 16, 2020

Hi fowler_23

Thanks for your reply. much appreciated.

I think my confusion here is around the OnlinePSTNGateway fqdn so you are basically saying that needs to match the carrier base domain? I was under the impression you could call this anything you liked provided it was a subdomain of the carrier base domain, so sbc1.carrierdomain.com.

The Voice route in the customer 1 tenant would point to customer1.carrierdomain.com as the PSTN Gateway List and the trunk would be derived from carrierdomain.com.

Thanks!

fowler_23
Iron Contributor
Sep 17, 2020
ASharpie

Let me give you my setup which might help

Carrier Domain: contoso.com
Carrier Sub Domain: voice.contoso.com
Carrier OnlinePSTNGateway: voice.contoso.com

Customer Domain: customer.com
Customer Sub Domain: customer1.voice.contoso.com
CSOnlineVoiceRoute: customer1.voice.contoso.com

customer1.voice.contoso.com > Public A Record > Pointing to IP of voice.contoso.com

Customer VoiceRoute picks up derived trunk from voice.contoso.com

Regards
- ASharpie
  Copper Contributor
  Sep 17, 2020
  Hi fowler_23
  
  Thanks and this is basically what I have however I do not have a carrier subdomain defined do I need that? I hadn't read anywhere you needed that, I understood just a carrier base domain and tenant subdomains.
  
  So when I create the carrier OnlinePSTNGateway I use the base domain as the FQDN .
  
  When I define the voice route in the customer tenant do I still have to add the -OnlinePSTNGatewayList parameter and add the FQDN of the OnlinePSTNGateway or is this derived some how auto-magically?
  
  Thanks again for your continued assistance!
  - fowler_23
    Iron Contributor
    Sep 17, 2020
    ASharpie
    
    If you refer to https://docs.microsoft.com/en-us/microsoftteams/direct-routing-sbc-multiple-tenants
    and under the section Register a Base Domain and subdomains. Their example has the carrier base domain as adatum.biz and then an additional domain customers.adatum.biz so my example follows Microsoft's logic.
    
    No - you don't need to add PSTNOnlineGateway parameter to the customer tenant. That same document again. Search for Create a trunk and provision user. That gives some information there about derived trunks.